Alumni

PAST POSTDOCTORAL RESEARCH FELLOWS

 
Irene Schimmelpfennig (schimmelpfennig@cerege.fr)
Research Scientist, College de France, CEREGE
 
I am interested in refining the cosmogenic nuclide dating method, with focus on production rate calibrations of the in-situ nuclides 36Cl and 14C. I set up the 36Cl extraction procedure from silicates at LDEO and ran the in-situ 14C lab (link). My research is also centered on Holocene mountain glacier fluctuations in the European Alps using 10Be and in-situ 14C (link). In addition, I am involved in projects in Antarctica, Western USA, New Zealand and Patagonia.
 

Personal Site,  CV 

 

 

 

 

 

 

 

 

 

Meredith Kelly (meredith.a.kelly@dartmouth.edu)

Assistant Professor, Dartmouth College 
 
My research interests are centered upon investigating the timing and extent of changes in past glacial systems as a means of developing records of global paleoclimate events.  My goal is to use these records to further our understanding of the climate system and causes of abrupt climate changes.
 
My current research projects target major scientific questions related to the climate system in three locations.  First, I am developing paleoclimate records from mountain glaciers in Greenland to advance our understanding of seasonality during abrupt cold events. Second, I am developing records of glaciation in the Peruvian Andes that will help determine the role of the tropics in the global climate system.  Third, I am determining the timing and rate of deglaciation of the southern sector of the Laurentide Ice Sheet to examine the influence of melt water on past climate changes. 
 

Ricardo Ramalho (ric.ramalho@bristol.ac.uk)                                                                                                       gUniversity of Bristol

As an earth scientist, I aspire to provide a contribution to the comprehension of oceanic hotspots, ocean island systems, volcanic/igneous systems, the evolution of volcanic landscapes and the link between surface processes and deep mechanisms. I am particularly committed towards a multidisciplinary approach combining direct geological observations, geomorphology, isotope geochronology, geophysical imaging, numerical and analogue modeling, and with a strong physical footing on the geological record. 

 

 

 

Gordon Bromley (gordon.r.bromley1@maine.edu)                                                                                                              Research Assistant Professor, University of Maine 

My research incorporates glacial geoology and cosmogenic geochronology methods to reconstruct late-Quaternary and Holocene climate behaviour. Specific interests include palaeoclimate of the tropical Andes, causes of late-glacial abrupt climate events, and the future evolution of tropical glaciers and hydrology. My work also concerns past, present, and future stability of the West Antarctic Ice Sheet, as well as palaeoclimate-archaeologic links in the high Andes.

 
 
 

 Vincent Rinterknecht (vr10@st-andrews.ac.uk)                                                                                                            Lecturer, University of St Andrews

 

 

 

 

 

  Aaron Putnam (aaron.putnam@umit.maine.edu)                                                                                               Research Associate, University of Maine 

I am interested in mechanisms of Late Quaternary climate change.  In particular, the causes of the 100,000-yr glacial cycles of the past million years, and the abrupt climate switches that brought them to a close, remain fundamental outstanding problems.  I am also interested in the underlying causes of natural climate variations over the Holocene, and their associations with the rise and fall of civilizations.  The effects of ice ages, abrupt climate change, and Holocene climate variability have been imprinted on the landscape by Earth's mountain glaciers, ice sheets, and pluvial lake systems. I am attempting to construct the evolution of these climate switches by developing precise chronologies of glacier and pluvial lake activity in the middle latitudes of the polar hemispheres.  I use surface-exposure and radiocarbon dating techniques to construct chronologies of glacial landforms that mark past extents of mountain glaciers and ice sheets.  Working together with Sean Birkel, I employ geometrical snowline reconstruction and glaciological modeling techniques to derive quantitative paleoclimatic information from glacier landforms. We are interested in how abrupt climate anomalies are transmitted between the hemispheres during glacial terminations, and more recently during Medieval time and the 'Little Ice Age'.

 

 Mike Kaplan (mkaplan@ldeo.columbia.edu)                                                                                                                        Lamont Associate Research Professor, Lamont Doherty Earth Observatory

My main research interests include Quaternary and glacial geology, paleoclimatology, ice sheet dynamics, limnogeology, and using cosmogenic surface exposure dating to obtain chronologies for glacial and ice sheet fluctuations in South America, New Zealand, Arctic Canada, and Alaska. I have worked in eastern Maine, Arctic Canada, South America, and in New Zealand.

 

 
 
 
 
PAST STUDENTS 
 
Description: http://www.ldeo.columbia.edu/res/pi/tcn/Lamont_Cosmogenic_Nuclide_Lab/People_files/web_photo.jpgBrent Goehring (bgoehrin@tulane.edu)
Assistant Professor, Tulane University
 
My research focuses on the development and application of new techniques in surface exposure dating, including in situ 14C extraction (link). I am also interested in past and future climate change, combining terrestrial and marine climate proxies, tectonic geomorphology and paleoseismology, and other Quaternary geochronology methods. I have worked in the western United States Norway, and Greenland.
 
 
 
 
   
 
 
 
My research interests are focused upon determining useful dating techniques for recent (less than 2 Ma) movement along faults, and using these dates along with structural analyses of the faults to determine recent tectonic movement.  This has applications in both large-scale plate movement as well as short-term earthquake hazards.  
 

 

 

 

 

 

Aaron Putnam
University of Maine
 
Alice Doughty
Dartmouth College
 
Samuel Kelly
University of Waterloo
 
Kathryn Ladig
University of Maine 
 
Colin Dowey 
University of Maine 
 
Toby Koffman
Lamont Doherty Earth Observatory
 
Pete Strand
 
Jennifer Lennon